UDM Goup modify

Hi, I have to add a group inside other group.
I’ve write:

univention-directory-manager groups/group modify --dn cn='father,ou=xxxx,dc=xxxx,dc=xxxx' --append groups='cn=son,ou=xxxx,dc=xxxx,dc=xxxx'

but “WARNING: No attribute with name groups in this module, value not appended.”

What is right sintax?
Thank you
Regards

The attributes name is nestedGroup.

If I don’t know the name, I configure it graphically using the UMC, and then look on the command line.

Greetings
Daniel

Thank you, --append nestedGroup= works fine

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